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Isotope hydrology generates information about the "age, origins, size, flow and fate of a water source... [which] can guide sound water-use policy, letting water engineers better map underground aquifers, conserve supplies and control pollution."
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How the bar code made WalMart. Essential reading for the RFID age.
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Clifford Geertz's long review of Jared Diamond's "Collapse" and Richard Posner's "Catastrophe."
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